There have been many recent developments on machine learning about vortex induced vibration (VIV) in laminar flow. We extended these applications to turbulence by employing a state-of-the-art parameterized Navier–Stokes equations-based physics informed neural network (PNS-PINN). Turbulent flow past cylinder undergoing VIV motion with Reynolds number R e = 1 0 4 , is considered as an example. Wi...

Suspension bridges’ in-plane extended configuration makes them vulnerable to wind-induced vibrations. Vortex shedding is a kind of aerodynamic phenomenon causing bridge vibrate in vertical and torsional modes. Vortex-induced vibrations disturb the bridge’s serviceability limit, which not favorable, long run, they can cause fatigue damage. In this condition, vibration control strategies seem be ...

Multiple unusual vibrations occurred in SEG Plaza from May 18 to 20, 2021. To investigate the causes of these vibrations, a rigidity compression wind tunnel test was applied study wind-induced response main structure, and acceleration sensitivity analysis conducted with parameters such as speed, structural period damping ratio included. Additionally, mast vortex-induced resonance equivalent for...

A fluid multi-structure interaction (FMSI) study on flow-induced coupled vibrations of an elastically mounted cylinder and a detached flexible plate is carried out numerically at constant $Re=100$ . The effect non-dimensional gap $G^{*}$ between the two structures, reduced velocity $U_{c}^{*}$ , proximity-induced flow physics vibration characteristics system presented. FMSI shows two-state resp...

analyzing the vortex-induced vibration of a slender marine structure withlength to diameter ratio up to 200 is the objective of this study. this slender is free to move in both in-line and cross flow directions and immersed completely in water. three different types of shear currents pass on it and cause to vibrate slender in different forms. nowadays, these vibrations are very important for de...

A new electromagnetic energy harvester for harnessing energy from vibration induced by Kármán vortex street is proposed. It converts flow energy into electrical energy by fluid flow, vortex shedding from a bluff body and electromagnetic induction. An analytical design method for the energy harvester is developed. A prototype of the energy harvester is fabricated and tested. The prototype has a ...

Transverse vortex-induced vibration (VIV) of a two-dimensional, elliptic cylinder with various aspect ratios and stiffness is studied. The elastically mounted heated, the flow direction aligned thermal-induced buoyancy force. transverse VIV can be suppressed as thermal control parameter, Richardson number (Ri), increases. Complete suppression achieved when Ri above critical value, Ric. increase...

An adaptive fuzzy sliding mode controller (AFSMC) is adopted to reduce the 2D flow-induced vibration of an elastically supported square-section cylinder, free to oscillate in stream-wise andtransverse directions in both lock-in and galloping regions. The AFSMC strategy consists of a fuzzy logic inference system intended to follow a sliding-mode controller (SMC), and a robust control syste...